Numerical control mounting device and method for filler neck of cotton thread hose

Abstract

The invention discloses a cotton thread hose filler neck numerical control installation device and method, belongs to the technical field of machining, and can be used for installing a direct nozzle or a bent filler neck. When the direct nozzle is installed, the cotton thread hose filler neck numerical control installation device comprises a cotton thread hose, a triangular support, a semicircular fixing block with a fixing hole, a semicircular fixing block, a pipe sleeve, an outer sleeve nut and a mandrel with a conical surface positioning function; the direct pipe nozzle is arranged in the outer sleeve nut, the outer sleeve nut is screwed into the mandrel, and the direct pipe nozzle is fixed under the combined action of the outer sleeve nut and the mandrel. When the bent filler neck is installed, the bent filler neck comprises a cotton thread hose, a triangular support, a semicircular fixing block with a fixing hole, a semicircular fixing block, a pipe sleeve, an outer sleeve nut, a semicircular fixing block with a positioning cavity and a mandrel of the semicircular fixing block, and the bent filler neck is fixed by the semicircular fixing block and the mandrel through the internal shape. And the part of the bent filler neck fixed into the cotton hose is coaxial with the cotton hose. By improving the clamping mode and the screwing-in mode in the installation process of the cotton thread hose, the percent of pass and the production efficiency can be effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of mechanical processing technology, and relates to a CNC installation device and method for cotton thread hose connectors. Background Technology

[0002] In the field of mechanical manufacturing, the assembly structure of cotton thread hose parts includes the cotton thread hose, sleeve, outer nut, direct nozzle, and curved nozzle. The installation process of the cotton thread hose is divided into two steps. First, both ends of the cotton thread hose are screwed into the sleeve, and the outer circle of the cotton thread hose engages with the thread inside the sleeve. Second, the direct nozzle and curved nozzle need to be screwed into the inner hole of the cotton thread hose as shown in the figure. The sealing is ensured by the compression of the direct nozzle and curved nozzle against the thread of the sleeve.

[0003] Currently, after the cotton thread hose is installed into the sleeve, the following operation process is followed when installing the direct nozzle or the bent nozzle: (1) Generally, the direct nozzle needs to be installed first, and the outer circle of the sleeve is held by a three-jaw chuck of a regular lathe; (2) Insert the cotton thread hose without the bent nozzle into the lathe spindle; (3) Start the lathe to drive the cotton thread hose and the sleeve to rotate; (4) The operator holds the direct nozzle and screws it into the inner hole of the cotton thread hose; (5) Repeat the above process when installing the bent nozzle. The reason for installing the direct nozzle first is to make it easier to insert the cotton thread hose with the direct nozzle already installed into the lathe spindle when installing the bent nozzle later, and to avoid the difficulty in inserting or the material being thrown off when rotating after installing the bent nozzle first.

[0004] However, this installation method has drawbacks. When installing direct or bent nozzles manually, it is only possible to roughly control the thread insertion depth, making it difficult to control the L dimension shown in the diagram. As a result, the pass rate and production efficiency are relatively low. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a CNC installation device and method for cotton thread hose connectors. By improving the clamping and screwing methods during the cotton thread hose installation process, this invention can effectively increase the pass rate and production efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A CNC installation device for cotton thread hose connectors is disclosed. This device can be used to install either a direct connector 8 or a curved connector 11. When installing a direct connector 8, the device includes a cotton thread hose 1, a triangular bracket 2, a semi-circular fixing block 3 with fixing holes, a semi-circular fixing block 4, a sleeve 5, an outer nut 6, and a mandrel 7 with a conical positioning surface. When installing a curved connector 11, the device includes the same components: a cotton thread hose 1, a triangular bracket 2, a semi-circular fixing block 3 with fixing holes, a semi-circular fixing block 4, a sleeve 5, an outer nut 6, a semi-circular fixing block 9 with a positioning cavity, and a mandrel 10 for the semi-circular fixing block. Specifically:

[0008] The specific installation device for installing the direct nozzle 8 is as follows:

[0009] The cotton thread hose 1 is a finished product, cut to the required length according to the drawing, with a flat end face and the two end faces being parallel to each other.

[0010] The triangular bracket 2 is triangular in shape, with a cylindrical hole at the top and threaded holes and pin holes on both sides at the bottom. After being positioned with the large support plate of the CNC lathe by pins, it is secured with bolts and can move axially with the large support plate. The cylindrical hole at the top of the triangular bracket 2 is coaxial with the spindle of the CNC lathe. The upper end of the triangular bracket 2 is provided with a threaded hole with a set screw.

[0011] The semi-circular fixing block 3 with fixing holes is a semi-circular ring structure. Its outer wall surface is machined with countersunk hole plane, and it is provided with fixing holes for bolts to pass through. The pipe sleeve 5 is firmly clamped to the semi-circular fixing block 4 by bolts.

[0012] The semicircular fixing block 4 has a stepped structure, including a semicircular ring structure on the left and a hollow cylindrical structure on the right, both with the same hole diameter and coaxial. The semicircular ring structure, combined with the semicircular fixing block 3 with fixing holes, forms a hollow ring structure. The inner wall hole diameter of the ring structure matches the outer diameter of the sleeve 5. After the sleeve 5 passes through the hollow ring structure, it is fixed by bolts. The sleeve 5 is inserted into the hollow cylindrical structure, and the outer diameter of the hollow cylindrical structure matches the inner diameter of the upper end of the triangular bracket 2. After insertion, it is fixed by a set screw to prevent movement. To avoid damaging the sleeve 5, a rubber pad is inserted during fixing, and it is ensured that the central axis of the sleeve is coaxial with the main axis of the CNC lathe after clamping and fixing.

[0013] The sleeve 5 has a cotton thread hose 1 inserted inside it, and the sleeve 5 has an internal thread.

[0014] The right end of the mandrel 7 with tapered positioning is an outer tapered surface that mates with the inner tapered surface of the direct nozzle 8, and the middle section is an external thread for mate with the outer nut 6 to clamp the direct nozzle 8; the left cylindrical surface, the middle external thread, and the right outer tapered surface of the mandrel 7 are coaxial, ensuring that after clamping the direct nozzle 8, the direct nozzle 8 is coaxial with the CNC lathe spindle.

[0015] The specific installation position and layout of the direct nozzle 8 in this device are as follows: the direct nozzle 8 is first installed into the outer nut 6, with its end face close to the inner end face of the outer nut; the outer nut 6 is then screwed into the mandrel 7 with tapered positioning, and the direct nozzle 8 is fixed under the combined action of the outer nut 6 and the mandrel 7 with tapered positioning.

[0016] Furthermore, the outer nut 6 is a finished product, with one part of the outer circle being cylindrical and the other part being hexagonal; the interior has two stepped sections, with the cylindrical surface on the same side as the outer circle having an internal thread and a larger inner diameter, and the other end being an inner hole.

[0017] Furthermore, the inner diameter of the cylindrical structure of the semicircular fixing block 4 is slightly larger than the outer diameter of the sleeve 5, making it easier for the sleeve 5 to be inserted into the inner hole at the right end.

[0018] Furthermore, the semicircular ring structure of the semicircular fixing block 4 and the semicircular ring structure of the semicircular fixing block 3 have symmetrical shapes and threaded holes. After they are joined together, they are fixed by bolts.

[0019] The specific installation device for installing the elbow nozzle 11 is as follows:

[0020] The structure and installation method of the flexible cotton hose 1, the triangular bracket 2, the semi-circular fixing block 3 with fixing holes, the semi-circular fixing block 4, the sleeve 5 and the direct nozzle 8 are the same.

[0021] The semi-circular fixing block 9 with positioning cavity is a semi-cylindrical structure with an internal cavity for fitting with the internal cavity of the mandrel 10 with semi-circular fixing block to clamp the shape of the bent pipe nozzle 11; the semi-cylindrical surface has a countersunk hole plane with a fixing hole for bolts to pass through, and the bent pipe nozzle 11 is firmly clamped with the mandrel 10 with semi-circular fixing block by bolts.

[0022] The mandrel 10 with the semi-circular fixing block has a stepped structure, including a cylindrical structure at the left end and a semi-cylindrical structure at the right end. The two parts are coaxial, and the diameter of the left end is smaller than that of the right end. That is, the large-diameter cylinder at the right end is bisected along the axial plane, and the semi-cylindrical structure is formed at the plane of the left cylinder. The semi-cylindrical structure at the right end has a cavity in the middle, which is used to fit with the cavity of the semi-circular fixing block 9 to clamp the shape of the bent pipe nozzle 11.

[0023] The semi-circular fixing block 9 and the mandrel 10 with the semi-circular fixing block work together to ensure that the part of the bent connector 11 that is fixed into the cotton thread hose 1 is coaxial with the cotton thread hose.

[0024] The sleeve 5 is the same as above, and is fixed by the semi-circular fixing block 3 and semi-circular fixing block 4 with fixing holes. The axis of the inner hole is coaxial with the cotton thread hose.

[0025] The specific installation position and layout of the bent nozzle 11 in the device is as follows: it is fixed by the semi-circular fixing block 9 and the mandrel 10 with the semi-circular fixing block by relying on their internal shapes, ensuring that the part of the bent nozzle 11 that is fixed into the cotton thread hose 1 is coaxial with the cotton thread hose.

[0026] Furthermore, the outer nut 6 is the same as above; this step is not functional and is only required for product design.

[0027] Furthermore, the cavities in the mandrel 10 with the semi-circular fixing block and the semi-circular fixing block 9 with the positioning cavity are machined according to the external structure of the bent pipe nozzle to ensure that the right end thread diameter of the bent pipe nozzle 11 is parallel to the machine tool spindle axis after clamping.

[0028] Furthermore, in the device designed in this invention, the pipe fitting for fixing the nozzle can be a 90° bend pipe fitting, or a 135° or other angle pipe fitting. It only requires the matching processing of a mandrel 10 with a semi-circular fixing block and an internal cavity structure of a semi-circular fixing block 9 with a positioning cavity.

[0029] A CNC installation method for cotton thread hose connectors, based on the aforementioned device, includes the following steps when installing the direct connector 8:

[0030] Step 1. Mount the mandrel 7 with tapered positioning onto the three-jaw chuck of the CNC lathe;

[0031] Step 2. Insert the outer nut 6 onto the direct nozzle 8;

[0032] Step 3. Secure the direct nozzle 8 to the mandrel 7 with tapered positioning using the outer nut 6;

[0033] Step 4. Insert the semi-circular fixing block 4 into the triangular bracket 2 and secure it firmly with the set screw;

[0034] Step 5. Insert the cotton thread hose 1 with the sleeve 5 installed into the semi-circular fixing block 4 from the right end, note that the sleeve 5 end is in front, and the sleeve 4 is inserted into the left semi-circle of the semi-circular fixing block 4.

[0035] Step 6. Secure the sleeve 5 with bolts using the semi-circular fixing block 3 with fixing holes, and use rubber pads to avoid pinching, ensuring that the axis of the sleeve 5 is coaxial with the axis of the main shaft;

[0036] Step 7. Start the CNC lathe spindle, move the large support plate to gently bring the tube sleeve against the end face of the direct nozzle 8 to determine the starting point;

[0037] Step 8. CNC programming: Using the tapping program, screw the 8-threaded nozzle into the inner hole of the cotton thread hose, and gradually adjust the tapping depth until the required depth is met.

[0038] Step 9. Rotate the outer nut 6 to loosen the mandrel 7 with tapered positioning from the direct nozzle 8;

[0039] Step 10. Loosen the bolts, loosen the semi-circular fixing block 3 with the fixing hole, and remove the cotton thread tube 1;

[0040] Step 11: Repeat steps 2-10 to process the next product. The CNC program and installation depth can be directly called up without needing to be adjusted for each product.

[0041] A CNC installation method for cotton thread hose connectors is implemented based on the above-mentioned device. When installing the bent connector 11, the process is similar to that of installing the direct connector 8. The difference is that the bent connector 11 is fixed on the CNC lathe by the mandrel 10 with a semi-circular fixing block and the semi-circular fixing block 9 with a positioning cavity, and ensures that the right end thread of the bent connector 11 is coaxial with the spindle axis.

[0042] The beneficial effects of this invention are as follows:

[0043] (1) The straight pipe joint and bent pipe joint of cotton thread hose installed by the technology of the present invention can be installed by CNC after adjusting the position and CNC program once. The installation efficiency and pass rate are higher than those of traditional manual installation.

[0044] (2) This installation method requires lower skill level from the operator. For example, when clamping the pipe sleeve on a regular lathe, the operator needs to keep the thread diameter of the pipe sleeve parallel to the axis of the pipe sleeve to avoid misalignment. Attached Figure Description

[0045] Figure 1 A schematic diagram for assembling a cotton thread hose;

[0046] Figure 2 This is a schematic diagram of the direct nozzle mounting structure of the present invention;

[0047] Figure 3 This is a schematic diagram of the installation structure of the bent pipe nozzle of the present invention;

[0048] Figure 4 A semi-circular fixing block with fixing holes;

[0049] Figure 5 A semi-circular fixed block;

[0050] Figure 6 A mandrel with tapered positioning.

[0051] In the diagram: 1. Flexible hose, 2. Triangular bracket, 3. Semicircular fixing block with fixing hole, 4. Semicircular fixing block, 5. Tube sleeve, 6. Outer nut, 7. Mandrel with conical positioning, 8. Direct nozzle, 9. Semicircular fixing block with positioning cavity, 10. Mandrel with semicircular fixing block; 11. Bent nozzle. Detailed Implementation

[0052] The present invention will be further described below with reference to specific implementation examples.

[0053] This embodiment provides a CNC installation device for cotton thread hose connectors. The device can be used to install either a direct connector 8 or a curved connector 11. When installing a direct connector 8, the device includes a cotton thread hose 1, a triangular bracket 2, a semi-circular fixing block 3 with fixing holes, a semi-circular fixing block 4, a sleeve 5, an outer nut 6, and a mandrel 7 with a conical positioning surface. When installing a curved connector 11, the device includes a cotton thread hose 1, a triangular bracket 2, a semi-circular fixing block 3 with fixing holes, a semi-circular fixing block 4, a sleeve 5, an outer nut 6, a semi-circular fixing block 9 with a positioning cavity, and a mandrel 10 for the semi-circular fixing block.

[0054] This embodiment specifically provides a specific installation device for installing the direct nozzle 8, which is as follows:

[0055] The cotton thread hose 1 is a finished product, cut to the required length according to the drawing, with flat end faces and parallel end faces. The triangular bracket 2 is triangular, with a cylindrical hole at the top and threaded holes and pin holes on both sides at the bottom; it is positioned with the large support plate of the CNC lathe by pins and then secured with bolts, allowing it to move axially with the large support plate. The cylindrical hole at the top of the triangular bracket 2 is coaxial with the spindle of the CNC lathe. The upper end of the triangular bracket 2 has a threaded hole with a set screw. The semi-circular fixing block 3 with a fixing hole is a semi-circular ring structure, with a countersunk hole plane machined on its outer wall surface, and a fixing hole for bolts to pass through it, which, together with the semi-circular fixing block 4, securely clamps the sleeve 5. The semicircular fixing block 4 has a stepped structure, including a semicircular ring structure on the left and a hollow cylindrical structure on the right, both with the same hole diameter and coaxial. The semicircular ring structure, combined with the semicircular fixing block 3 with fixing holes, forms a hollow ring structure. The inner wall hole diameter of the ring structure matches the outer diameter of the sleeve 5. After the sleeve 5 passes through the hollow ring structure, it is fixed by bolts. The sleeve 5 is inserted into the hollow cylindrical structure, and the outer diameter of the hollow cylindrical structure matches the inner diameter of the upper end of the triangular bracket 2. After insertion, it is fixed by a set screw to prevent movement. To avoid damaging the sleeve 5, a rubber pad is inserted during fixing, and it is ensured that the central axis of the sleeve is coaxial with the main axis of the CNC lathe after clamping and fixing. A cotton thread hose 1 is inserted into the sleeve 5, and the sleeve 5 has internal threads. The right end of the mandrel 7 with tapered positioning is an outer tapered surface that mates with the inner tapered surface of the direct nozzle 8, and the middle section is externally threaded for clamping the direct nozzle 8 with the outer nut 6. The left cylindrical surface, the middle external thread, and the right outer tapered surface of the mandrel 7 are coaxial, ensuring that the direct nozzle 8 is coaxial with the CNC lathe spindle after clamping. The specific installation position and layout of the direct nozzle 8 in this device is as follows: the direct nozzle 8 is first inserted into the outer nut 6, with its end face close to the inner end face of the outer nut's hole; the outer nut 6 is then screwed into the mandrel 7 with tapered positioning, and the direct nozzle 8 is fixed under the combined action of the outer nut 6 and the mandrel 7 with tapered positioning.

[0056] The outer nut 6 is a finished product, with one part of its outer circle being cylindrical and the other part being hexagonal; the interior has two stepped sections, with the cylindrical surface on the same side as the outer circle having internal threads and a larger inner diameter, and the other end being an inner hole. The inner diameter of the cylindrical structure of the semicircular fixing block 4 is slightly larger than the outer diameter of the sleeve 5, making it easier for the sleeve 5 to be inserted into the inner hole at the right end. The semicircular ring structure of the semicircular fixing block 4 and the semicircular ring structure of the semicircular fixing block 3 have symmetrical shapes and threaded holes, and the two are fixed together by bolts.

[0057] This embodiment specifically provides a specific installation device for installing the elbow nozzle 11, which is as follows:

[0058] The structure and installation method of the flexible hose 1, triangular bracket 2, semi-circular fixing block 3 with fixing hole, semi-circular fixing block 4, and sleeve 5 are the same as those of the direct nozzle 8. The semi-circular fixing block 9 with positioning cavity is a semi-cylindrical structure with an internal cavity for fitting with the internal cavity of the mandrel 10 with semi-circular fixing block to clamp the shape of the bent nozzle 11. The semi-cylindrical surface has a countersunk hole plane with fixing holes for bolts to pass through, and the bent nozzle 11 is firmly clamped to the mandrel 10 with semi-circular fixing block by bolts. The mandrel 10 with semi-circular fixing block has a stepped structure, including a cylindrical structure at the left end and a semi-cylindrical structure at the right end. The two parts are coaxial, and the diameter of the left end is smaller than that of the right end. That is, the large-diameter cylinder at the right end is bisected along the axial plane, and the bisection forms a semi-cylindrical structure at the plane of the left section of the cylinder. The semi-cylindrical structure at the right end has a cavity in the middle for fitting with the cavity of the semi-circular fixing block 9 to clamp the shape of the bent nozzle 11. The semi-circular fixing block 9 and the mandrel 10 with the semi-circular fixing block work together to ensure that the part of the bent connector 11 that is fixed into the cotton thread hose 1 is coaxial with the cotton thread hose. The sleeve 5 is similarly fixed by the semi-circular fixing blocks 3 and 4 with fixing holes, and its inner hole axis is coaxial with the cotton thread hose. The specific installation position and layout of the bent connector 11 in this device is as follows: it is fixed by the semi-circular fixing block 9 and the mandrel 10 with the semi-circular fixing block using their internal shapes, ensuring that the part of the bent connector 11 that is fixed into the cotton thread hose 1 is coaxial with the cotton thread hose.

[0059] The outer nut 6 is the same as above; it is not used in this step and is only required for product design. The cavities in the mandrel 10 with the semi-circular fixing block and the semi-circular fixing block 9 with the positioning cavity are machined according to the external structure of the bent pipe nozzle to ensure that the mean diameter of the right end thread of the bent pipe nozzle 11 is parallel to the axis of the machine tool spindle after clamping.

[0060] This embodiment provides a method for installing a direct nozzle 8. First, press... Figure 1 The cotton thread hose should be installed into the sleeve at both ends. Either a straight nozzle or a bent nozzle can be installed first. Figure 1In the product design drawing, L1 refers to the length of the cotton hose, also in the product design drawing, and d refers to the inner diameter of the cotton hose. The process includes the following steps:

[0061] Step 1. Mount the mandrel 7 with tapered positioning onto the three-jaw chuck of the CNC lathe;

[0062] Step 2. Insert the outer nut 6 onto the direct nozzle 8;

[0063] Step 3. Secure the direct nozzle 8 to the mandrel 7 with tapered positioning using the outer nut 6;

[0064] Step 4. Insert the semi-circular fixing block 4 into the triangular bracket 2 and secure it firmly with the set screw;

[0065] Step 5. Insert the cotton thread hose 1 with the sleeve 5 installed into the semi-circular fixing block 4 from the right end, note that the sleeve 5 end is in front, and the sleeve 4 is inserted into the left semi-circle of the semi-circular fixing block 4.

[0066] Step 6. Secure the sleeve 5 with bolts using the semi-circular fixing block 3 with fixing holes, and use rubber pads and other measures to avoid pinching damage, ensuring that the sleeve axis is coaxial with the spindle axis;

[0067] Step 7. Start the CNC lathe spindle, move the large support plate to gently bring the tube sleeve against the end face of the direct nozzle 8 to determine the starting point;

[0068] Step 8. CNC programming: Using the tapping program, screw the 8-threaded nozzle into the inner hole of the cotton thread hose, and gradually adjust the tapping depth until it meets the depth required by the drawing.

[0069] Step 9. Rotate the outer nut 6 to loosen the mandrel 7 with tapered positioning from the direct nozzle 8;

[0070] Step 10. Loosen the bolts, loosen the semi-circular fixing block 3 with the fixing hole, and remove the cotton thread tube;

[0071] Step 11: Repeat steps 2-10 to process the next product. The CNC program and installation depth can be directly called up without needing to be adjusted for each product.

[0072] The installation of the elbow nozzle 11 is specifically as follows:

[0073] The process is similar to installing a direct nozzle, except that the bent nozzle is fixed on the CNC lathe by a spindle 10 with a semi-circular fixing block and a semi-circular fixing block 9 with a positioning cavity, ensuring that the thread on the right end of the bent nozzle is coaxial with the spindle axis.

[0074] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A CNC installation device for cotton thread hose connectors, characterized in that, The cotton thread hose connector CNC installation device can be used to install a direct connector (8) or a bent connector (11); When installing the direct nozzle (8), the installation device includes a cotton hose (1), a triangular bracket (2), a semi-circular fixing block (3) with fixing holes, a semi-circular fixing block (4), a sleeve (5), an outer nut (6), and a mandrel (7) with conical positioning. Specifically, the semi-circular fixing block (3) with fixing holes is a semi-circular ring structure; the semi-circular fixing block (4) is a stepped structure, including a semi-circular ring structure on the left and a hollow cylindrical structure on the right. The semicircular fixing block (3) is assembled to form a hollow ring structure. A sleeve (5) is inserted into the hollow cylindrical structure. The outer diameter of the hollow cylindrical structure is consistent with the inner diameter of the upper end of the triangular bracket (2). After being inserted, it is fixed by a set screw. A cotton hose (1) is inserted into the sleeve (5). The right end of the mandrel (7) with the conical positioning is the outer conical surface that mates with the inner conical surface of the direct nozzle (8). The middle section is an external thread, which is used to mate with the outer nut (6) to clamp the direct nozzle (8). When installing the elbow nozzle (11), the installation device includes a cotton hose (1), a triangular bracket (2), a semi-circular fixing block (3) with fixing holes, a semi-circular fixing block (4), a sleeve (5), an outer nut (6), a semi-circular fixing block (9) with a positioning cavity, and a mandrel (10) for the semi-circular fixing block; specifically: the structure of the cotton hose (1), the triangular bracket (2), the semi-circular fixing block (3), the semi-circular fixing block (4), and the sleeve (5) is similar to that of the direct nozzle (8). The installation method is the same; the semi-circular fixing block (9) with positioning cavity is a semi-cylindrical structure with an internal cavity for fitting with the internal cavity of the mandrel (10) with semi-circular fixing block to clamp the bent pipe nozzle (11); the mandrel (10) with semi-circular fixing block is a stepped structure, including a cylindrical structure at the left end and a semi-cylindrical structure at the right end. The two parts are coaxial, and the diameter of the left end is smaller than that of the right end. The semi-cylindrical structure has a cavity in the middle for fitting with the cavity of the semi-circular fixing block (9) to clamp the bent pipe nozzle (11).

2. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, When installing the direct nozzle (8), the installation device is specifically as follows: The outer wall surface of the semi-circular fixing block (3) with fixing holes is machined with a countersunk hole plane, which is provided with fixing holes for bolts to pass through. The semicircular ring structure and the hollow cylindrical structure of the semicircular fixing block (4) have the same diameter and are coaxial; after the sleeve (5) passes through the hollow ring structure, the sleeve (5) is fixed by bolts. The left cylindrical surface, the middle external thread, and the right external conical surface of the mandrel (7) with tapered positioning are coaxial, ensuring that after clamping the direct nozzle (8), the direct nozzle (8) is coaxial with the CNC lathe spindle; The outer nut (6) has a cylindrical shape at one end and a hexagonal shape at the other end; the interior has a two-stage stepped structure. The direct nozzle (8) is first inserted into the outer nut (6), with its end face close to the inner end face of the outer nut (6); the outer nut (6) is then screwed into the mandrel (7) with tapered positioning, and the direct nozzle (8) is fixed under the combined action of the outer nut (6) and the mandrel (7) with tapered positioning.

3. The CNC installation device for cotton thread hose connectors according to claim 2, characterized in that, The semicircular ring structure of the semicircular fixing block (4) is symmetrical to the semicircular ring structure of the semicircular fixing block (3), and has threaded holes. The two are fixed by bolts after being joined together.

4. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, When installing the elbow nozzle (11), the installation device is specifically as follows: The semi-cylindrical surface of the semi-circular fixing block (9) with positioning cavity is provided with a countersunk hole plane, which is provided with a fixing hole for passing through the bolt. The bent pipe nozzle (11) is clamped firmly with the mandrel (10) with semi-circular fixing block by bolt. The semi-circular fixing block (9) and the mandrel (10) with the semi-circular fixing block work together to ensure that the part of the bent connector (11) that fixes the cotton thread hose (1) is coaxial with the cotton thread hose. The cavities in the spindle (10) with the semi-circular fixing block and the semi-circular fixing block (9) with the positioning cavity are machined according to the external structure of the bent pipe nozzle (11) to ensure that the right end thread diameter of the bent pipe nozzle (11) is parallel to the machine tool spindle axis after clamping. The sleeve (5) is fixed by a semi-circular fixing block (3) and a semi-circular fixing block (4) with fixing holes, and the inner hole axis is coaxial with the cotton thread hose (1); The bent connector (11) is fixed by the semi-circular fixing block (9) and the mandrel (10) with the semi-circular fixing block by relying on the internal shape, ensuring that the part of the bent connector (11) fixed into the cotton hose (1) is coaxial with the cotton hose (1).

5. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, The cotton hose (1) is cut to the required length, with the end face being flat and the two end faces being parallel to each other.

6. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, The triangular bracket (2) is triangular with a cylindrical hole at the top and threaded holes and pin holes at the bottom of both sides. After being positioned with the large pallet of the CNC lathe by the pin, it is fastened with bolts and can move axially with the large pallet. The cylindrical hole at the top of the triangular bracket (2) is coaxial with the spindle of the CNC lathe. The upper end of the triangular bracket (2) is provided with a threaded hole with a set screw.

7. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, When the sleeve (5) is fixed, a rubber pad can be inserted. After clamping and fixing, the central axis of the sleeve is coaxial with the main axis of the CNC lathe. The sleeve (5) is provided with internal threads.

8. The CNC installation device for cotton thread hose connectors according to claim 1, characterized in that, In the installation device, the pipe joint for fixing the nozzle can be a 90° bend pipe joint, or a 135° or other angle pipe joint. It only requires the matching processing of a mandrel (10) with a semi-circular fixing block and the internal cavity structure of the semi-circular fixing block (9) with a positioning cavity.

9. A CNC installation method for cotton thread hose connectors, characterized in that, Based on the device according to any one of claims 1-8, when the direct nozzle (8) is installed, the following steps are included: Step 1. Mount the mandrel (7) with tapered positioning onto the three-jaw chuck of the CNC lathe; Step 2. Insert the outer nut (6) onto the direct nozzle (8); Step 3. Secure the direct nozzle (8) to the mandrel (7) with tapered positioning using the outer nut (6); Step 4. Insert the semi-circular fixing block (4) into the triangular bracket (2) and secure it firmly with the set screw; Step 5. Insert the cotton hose (1) with the sleeve (5) installed into the semi-circular fixing block (4) from the right end. Note that the sleeve (5) end is in front and the sleeve 4 is inserted into the left semi-circle of the semi-circular fixing block (4). Step 6. Secure the sleeve (5) with bolts using the semi-circular fixing block (3) with fixing holes; Step 7. Start the CNC lathe spindle, move the large pallet to drive the tube sleeve to lightly touch the end face of the direct nozzle (8) to determine the starting point; Step 8. Using the tapping process, screw the thread of the direct nozzle (8) into the inner hole of the cotton hose (1), and gradually adjust the tapping depth until the required depth is met; Step 9. Rotate the outer nut (6) to loosen the mandrel (7) with tapered positioning from the direct nozzle (8); Step 10. Loosen the bolts, loosen the semi-circular fixing block (3) with the fixing hole, and remove the cotton hose (1); Step 11: Repeat steps 2-10 to process the next product. The CNC program and installation depth can be directly called up without needing to be adjusted for each product.

10. A CNC installation method for cotton thread hose connectors according to claim 9, characterized in that, When installing the direct nozzle (8), the process is similar to that of installing the direct nozzle (8). The difference is that the bent nozzle (11) is fixed on the CNC lathe by the mandrel (10) with a semi-circular fixing block and the semi-circular fixing block (9) with a positioning cavity, and ensures that the right end thread of the bent nozzle (11) is coaxial with the spindle axis.

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